2515253891 has 2 divisors, whose sum is σ = 2515253892. Its totient is φ = 2515253890.

The previous prime is 2515253879. The next prime is 2515253899. The reversal of 2515253891 is 1983525152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2515253891 - 2³⁰ = 1441512067 is a prime.

It is not a weakly prime, because it can be changed into another prime (2515253899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257626945 + 1257626946.

It is an arithmetic number, because the mean of its divisors is an integer number (1257626946).

Almost surely, 2^2515253891 is an apocalyptic number.

2515253891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515253891 is an equidigital number, since it uses as much as digits as its factorization.

2515253891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 41.

The square root of 2515253891 is about 50152.3069359725. The cubic root of 2515253891 is about 1359.9635751130.

The spelling of 2515253891 in words is "two billion, five hundred fifteen million, two hundred fifty-three thousand, eight hundred ninety-one".